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-rw-r--r--drivers/char/n_tty.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index e96a00fe138..2bdb0144a22 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -1151,7 +1151,6 @@ static int copy_from_read_buf(struct tty_struct *tty,
n = min(*nr, n);
spin_unlock_irqrestore(&tty->read_lock, flags);
if (n) {
- mb();
retval = copy_to_user(*b, &tty->read_buf[tty->read_tail], n);
n -= retval;
spin_lock_irqsave(&tty->read_lock, flags);